# Re: \[RFC 01/32\] Kconfig: introduce and depend on LEGACY\_PCI

- From: Guenter Roeck \<linux@roeck-us.net\>
- Date: 2021-12-27 17:49:03 
- List: linux-wireless
- Page: https://ratatoskr.run/linux-wireless/2021/12/1619497
- Thread: https://ratatoskr.run/linux-arch/2021/12/1619460/t.md

```text
On 12/27/21 8:42 AM, Niklas Schnelle wrote:
> Introduce a new LEGACY_PCI Kconfig option which gates support for legacy
> PCI devices including those attached to a PCI-to-PCI Express bridge and
> PCI Express devices using legacy I/O spaces. Note that this is different
> from non PCI uses of I/O ports such as by ACPI.
>
> Add dependencies on LEGACY_PCI for all PCI drivers which only target
> legacy PCI devices and ifdef legacy PCI specific functions in ata
> handling.
>

This effectively disables all default configurations which now depend
on CONFIG_LEGACY_PCI. Yet, I don't see CONFIG_LEGACY_PCI added to
configuration files which explicitly enable any of the affected
configurations. Is that on purpose ? If so, I think it should at least
be mentioned in the commit description. However, I think it would be
more appropriate to either delete all affected configuration flags from
the affected configuration files, or to add CONFIG_LEGACY_PCI=y to those
files.

Guenter
```